Liaoyang Petrochemical Nylon 66 Project Put into Production: Industrial Game and Supply Chain Reconstruction Behind Technological Breakthrough

Project commissioning and technical advantages

recently, Fujian Baihong plant with an annual output of 150000 tons of maleic anhydride, constructed by the Sixth Branch of China Chemical 16th Chemical Construction Company, successfully started and put into operation once, which marks an important adjustment in the production capacity pattern of maleic anhydride in East China.

As one of the largest single maleic anhydride production units in East China, the unit adopts the international advanced n-butane oxidation production process. This process route shows three core advantages: high raw material conversion rate, low energy consumption per unit product, superior environmental protection performance, and its process technology and equipment level is in the leading position in the industry. From the perspective of market competitiveness, leading technology will win significant cost and quality advantages for enterprises.

From the perspective of downstream applications, the maleic anhydride produced by the device can be widely used in plastics, coatings, building materials and other fields. With the rapid development of China's high-end manufacturing and new materials industry, the demand for high-quality maleic anhydride continues to grow. The commissioning of the project will effectively alleviate the pressure on supply and demand in the domestic market and provide downstream enterprises with more stable raw material guarantee.

It is worth noting that under the background of increasingly strict environmental protection supervision in China, the environmental protection technology adopted in the project can effectively control the emission of volatile organic compounds. Compared with the traditional process, this advantage not only meets the requirements of China's "double carbon" strategy, but also helps the green transformation of the chemical industry, and provides a reference case for international chemical enterprises.

Deep Analysis of Industrial Chain Integration Layout

the maleic anhydride plant put into production by Fujian Baihong this time is not an independent project, but a key link in its large-scale industrial chain integration strategy. The overall construction content of the project reflects the complete industrial chain design from upstream raw materials to midstream intermediates to downstream end products, including 18 sets of main production units:

upstream raw material handling and core production: 300000 tons/year 1# butane pretreatment unit and 300000 tons/year 2# butane pretreatment unit provide sufficient raw materials for two sets of 150000 tons/year maleic anhydride units (1# and 2#), with a total annual maleic anhydride capacity of 300000 tons.

Downstream deep processing system: 100000 tons/year succinic acid plant, 150000 tons/year 1,4-butanediol plant (29000 tons for self-use) and 50000 tons/year PBS plant, forming a longitudinal extension of maleic anhydride industry chain.

Carbon one chemical cluster: 350000 tons/year syngas separation device, 350000 tons/year acetic acid device (72000 tons for self-use), 100000 tons/year vinyl acetate device, 150000 tons/year 1#EVA device (kettle method), 200000 tons/year 2#EVA device (tubular method) to build a high value-added product line.

circular economy system: 200000 tons/year CO2 recovery unit, 100000 tons/year ethylene carbonate unit, 140000 tons/year propylene carbonate unit (120000 tons for self-use), 100000 tons/year dimethyl carbonate unit (all for self-use), 120000 tons/year ethyl methyl carbonate unit, and supporting acetaldehyde and ethylene glycol recovery units.

This integrated layout brings three strategic values: first, the procurement and logistics costs are significantly reduced through internal product self-use; second, the recycling of by-products is realized to improve resource efficiency; and finally, the ability to resist market fluctuations is enhanced, and the benefits are balanced through other links in the industrial chain when the price of a single product goes down. For overseas chemical traders and supply chain practitioners, such large-scale integration projects will reshape the supply pattern in East China, and it is worth closely tracking their impact on international market prices, trade flows and competitive dynamics.